Cup or head for massage devices.



C. M. SIEBERT, JR. CUP OR HEAD FOR MASSAGE DEVICES.

APPLICATION FILED JUNE 16 1909.

Patented Feb. 22, 1910.

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attonncg ENE err CHARLES 1VI. SIEBERT, JR., 0]? COLUMBUS, OHIO.

CUP OR HEAD FOR MASSAGE DEVICES.

To all whom it may concern:

Be it known that I, CHARLES M. SIEBERT, JR, a citizen of the UnitedStates, residing at Columbus, in the county of Franklin and State ofOhio, have invented certain new and useful Improvements in Cups or Headsfor Massage Devices, of which the following is a specification.

My invention relates to the improvement of cups or heads for massagedevices and has particular relation to that class of cups for massagingmachines which is shown in my former patent No. 893,021, issued underdate of July 14th, 1908, and in which a flexible disk of yieldingmaterial is mounted in the cup or head and adapted to have impartedthereto, a rapid vibratory motion through the influence of aninterrupted air current.

The objects of my present invention are to provide a cup of this classwherein is employed improved means for retaining the marginal portion ofthe rubber or flexible disk, in connection with the body of the head andwherein improved means are provided for relieving the disk from theeffects of unnecessary air pressure and for regulating the size of theexhaust or relief passage. These objects I accomplish in the mannerillustrated in the accompanying drawing, in which:

Figure 1 is a central vertical section of my improved cup, Fig. 2 is arear elevation of the cup or head, and Fig. 3 is an enlargement of aportion of the section shown in Fig. 1.

Similar numerals refer to similar parts throughout the several views.

In carrying out my invention, I employ a cup body 1 of hard rubber,fiber or other suitable material, said body comprising a straighttubular shank portion 2 and an enlarged circular head portion 3, thelatter having the greater portion of its periphery threaded. The outerface or end of the enlarged portion 8, is formed, as shown, with acup-like depression or cavity 4:, which communicates centrally with thereduced inner and central opening 5 of the shank 2.

For the reason hereinafter set forth, I provide a comparatively smallexhaust air passage 6, which leads from the recess 4 through the body ofthe head 1 and lengthwise through the shank 2 on the outer side of itscentral bore 5. Upon the outer face of the head 1 about the mouth of therecess Specification of Letters Patent.

Application filed June 16, 1909.

Patented Feb. 22, 1910.

Serial No. 502,420.

4, I provide a circular band or strip 7 of metal or other suitablematerial, the outer face of which has formed therein a continuousprojection or rib 8. WVith this ribbed face of the circular member 7contacts the marginal portion of a disk 9 of comparatively thin rubberor other suitable flexible material. The rubber disk thus employed isheld in place in contact with the band 7 by the inturned outer portionof an internally threaded cap 10 which is adapted, as shown, to bescrewed upon the threaded periphery of the head 1. The inturned outerportion of the cap 10, has formed on its inner face a continuouscircular recess 11 which is adapted, as shown more clearly in Fig. 3 ofthe drawing, to receive the material of which the disk is formed whichis pressed therein by the rib 8 of the band 7.

It is obvious that by the means described, the disk will be firmlyclamped over the recess a of the head or cup body.

Leading into a threaded opening formed in the wall of the shank 2 is aregulating screw which is indicated in dotted lines at 12 in Fig. 2. Theinner end of this screw is adapted to intersect the air exhaust orrelief passage 6 and said screw is provided on its outer end with asuitable knurled head 12.

In the operation of the class of massage devices to which my inventionparticularly applies, an air pump and controlling mechanism isordinarily employed by means of which air is alternately injectedthrough a tubular conductor which is adapted to be connected with theshank 2, through the shank passage 5 and into the cup chamber or recess4 and withdrawn therefrom, this operation being sufliciently rapid toresult in a corresponding rapid inward and outward or vibratory motionof the flexible disk 9. In utilizing my device, the outer surface of thedisk is placed against the surface to be massaged, with the result thatthe skin of the person to be operated upon, is subjected to the actionof the vibratory motion of the disk.

As in my said former patented construction, the air outlet which isindicated at 6 in the accompanying drawing, is for the purpose ofaffording relief to the disk from undesirable air pressure andpreventing any tendency of the bursting of the vibrating disk throughthe undue pressure thereon. Ordinarily the air pump or controllingmechanism which is employed in machines of this class is operatedthrough an electric motor and it has been found that a change inlocation of the motor and a consequent change in the employment ofelectric currents, results in a variation of the operation of the airpump or air controlling mechanism and in the consequent increase ordecrease of air pressure within the massage head. In order to overcomethis difficulty, I have provided the screw valve 12, which by beingturned inward or outward, may serve to regulate the degree ofobstruction of the passage 6 and thereby permit a greater or less amountof air to exhaust therethrough.

From the foregoing description, it will be seen that simple andeflicient means are herein provided for accomplishing the objiects ofthe invention, but while the elements shown and described are welladapted to serve the purposes for which they are intended, it is to beunderstood that the invention is not limited to the precise c011-struction set forth, but includes within its purview such changes as maybe made within the scope of the appended claims.

What I claim, is:

1. In a massage device, the combination with the body having a centralopening therethrough and a cup-like recess in its outer face, and meansfor connection with an air conducting pipe, of a ribbed band fittingabout said cup-like recess, a yielding disk of comparatively thinmaterial on the outer side of said band, and a cap adapted to be screwedon to said body and having an inturned portion adapted to clamp themarginal portion of the disk against said band.

2. In a massage-device, the combination with the body having an openingtherethrough, and a cup-like recess in one face, and means forconnection with an air conducting pipe, of a circular band fitting aboutsaid recess and having a ribbed face, a yielding disk of comparativelythin material having its marginal portion fitted against said band, anda cap adapted to be screwed upon said cap body and having an inturnedportion provided with a depression on its inner face.

8. In a massage device, the combination with the body having a tubularextension on one side and a cup-like recess on the t other, said tubularextension having an air relief passage therethrough and an adjustablescrew valve adapted to intersect said air passage, of a yielding diskadapted to be clamped over the mouth of saidv cup recess.

In testimony whereof I affix my signature in presence of two witnesses.

CHARLES M. SIEBERT, JR.

